Golang api.UniqueDeviceName函数代码示例

// Populates data struct with new pod/volume1/node.
// Calls VolumeExists() on that volume2/node.
// Verifies volume2/node does not exist, and one volume to attach.
func Test_VolumeExists_Positive_VolumeDoesntExistNodeExists(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	nodeName := "node-name"
	dsw.AddNode(nodeName)
	podName := "pod-name"
	volume1Name := api.UniqueDeviceName("volume1-name")
	volume1Spec := controllervolumetesting.GetTestVolumeSpec(string(volume1Name), volume1Name)
	generatedVolume1Name, podAddErr := dsw.AddPod(podName, volume1Spec, nodeName)
	if podAddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			podName,
			podAddErr)
	}
	volume2Name := api.UniqueDeviceName("volume2-name")

	// Act
	volumeExists := dsw.VolumeExists(volume2Name, nodeName)

	// Assert
	if volumeExists {
		t.Fatalf("Volume %q exists, it should not.", volume2Name)
	}

	volumesToAttach := dsw.GetVolumesToAttach()
	if len(volumesToAttach) != 1 {
		t.Fatalf("len(volumesToAttach) Expected: <1> Actual: <%v>", len(volumesToAttach))
	}

	verifyVolumeToAttach(t, volumesToAttach, nodeName, generatedVolume1Name, string(volume1Name))
}

func Test_GetAttachedVolumesForNode_Positive_TwoVolumeTwoNodes(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volume1Name := api.UniqueDeviceName("volume1-name")
	volume1Spec := controllervolumetesting.GetTestVolumeSpec(string(volume1Name), volume1Name)
	node1Name := "node1-name"
	_, add1Err := asw.AddVolumeNode(volume1Spec, node1Name)
	if add1Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add1Err)
	}
	volume2Name := api.UniqueDeviceName("volume2-name")
	volume2Spec := controllervolumetesting.GetTestVolumeSpec(string(volume2Name), volume2Name)
	node2Name := "node2-name"
	generatedVolumeName2, add2Err := asw.AddVolumeNode(volume2Spec, node2Name)
	if add2Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add2Err)
	}

	// Act
	attachedVolumes := asw.GetAttachedVolumesForNode(node2Name)

	// Assert
	if len(attachedVolumes) != 1 {
		t.Fatalf("len(attachedVolumes) Expected: <1> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName2, string(volume2Name), node2Name, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Populates data struct with two nodes with one volume/pod each and an extra
// pod for the second node/volume pair.
// Calls GetVolumesToAttach()
// Verifies two volumes to attach.
func Test_GetVolumesToAttach_Positive_TwoNodesOneVolumeEachExtraPod(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	node1Name := "node1-name"
	pod1Name := "pod1-name"
	volume1Name := api.UniqueDeviceName("volume1-name")
	volume1Spec := controllervolumetesting.GetTestVolumeSpec(string(volume1Name), volume1Name)
	dsw.AddNode(node1Name)
	generatedVolume1Name, podAddErr := dsw.AddPod(pod1Name, volume1Spec, node1Name)
	if podAddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod1Name,
			podAddErr)
	}
	node2Name := "node2-name"
	pod2Name := "pod2-name"
	volume2Name := api.UniqueDeviceName("volume2-name")
	volume2Spec := controllervolumetesting.GetTestVolumeSpec(string(volume2Name), volume2Name)
	dsw.AddNode(node2Name)
	generatedVolume2Name, podAddErr := dsw.AddPod(pod2Name, volume2Spec, node2Name)
	if podAddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod2Name,
			podAddErr)
	}
	pod3Name := "pod3-name"
	dsw.AddPod(pod3Name, volume2Spec, node2Name)
	_, podAddErr = dsw.AddPod(pod3Name, volume2Spec, node2Name)
	if podAddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod3Name,
			podAddErr)
	}

	// Act
	volumesToAttach := dsw.GetVolumesToAttach()

	// Assert
	if len(volumesToAttach) != 2 {
		t.Fatalf("len(volumesToAttach) Expected: <2> Actual: <%v>", len(volumesToAttach))
	}

	verifyVolumeToAttach(t, volumesToAttach, node1Name, generatedVolume1Name, string(volume1Name))
	verifyVolumeToAttach(t, volumesToAttach, node2Name, generatedVolume2Name, string(volume2Name))
}

// Populates data struct with new pod/volume/node.
// Calls VolumeExists() on that volume/node.
// Verifies volume/node exists, and one volume to attach.
func Test_VolumeExists_Positive_VolumeExistsNodeExists(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	nodeName := "node-name"
	dsw.AddNode(nodeName)
	podName := "pod-name"
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	generatedVolumeName, _ := dsw.AddPod(podName, volumeSpec, nodeName)

	// Act
	volumeExists := dsw.VolumeExists(generatedVolumeName, nodeName)

	// Assert
	if !volumeExists {
		t.Fatalf("Volume %q does not exist, it should.", generatedVolumeName)
	}

	volumesToAttach := dsw.GetVolumesToAttach()
	if len(volumesToAttach) != 1 {
		t.Fatalf("len(volumesToAttach) Expected: <1> Actual: <%v>", len(volumesToAttach))
	}

	verifyVolumeToAttach(t, volumesToAttach, nodeName, generatedVolumeName, string(volumeName))
}

// Populates desiredStateOfWorld cache with one node/volume/pod tuple.
// Calls Run()
// Verifies there is one attach call and no detach calls.
func Test_Run_Positive_OneDesiredVolumeAttach(t *testing.T) {
	// Arrange
	volumePluginMgr, fakePlugin := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := cache.NewDesiredStateOfWorld(volumePluginMgr)
	asw := cache.NewActualStateOfWorld(volumePluginMgr)
	ad := attacherdetacher.NewAttacherDetacher(volumePluginMgr)
	reconciler := NewReconciler(
		reconcilerLoopPeriod, maxWaitForUnmountDuration, dsw, asw, ad)
	podName := "pod-name"
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	dsw.AddNode(nodeName)
	volumeExists := dsw.VolumeExists(volumeName, nodeName)
	if volumeExists {
		t.Fatalf(
			"Volume %q/node %q should not exist, but it does.",
			volumeName,
			nodeName)
	}

	_, podErr := dsw.AddPod(podName, volumeSpec, nodeName)
	if podErr != nil {
		t.Fatalf("AddPod failed. Expected: <no error> Actual: <%v>", podErr)
	}

	// Act
	go reconciler.Run(wait.NeverStop)

	// Assert
	waitForNewAttacherCallCount(t, 1 /* expectedCallCount */, fakePlugin)
	waitForAttachCallCount(t, 1 /* expectedAttachCallCount */, fakePlugin)
	verifyNewDetacherCallCount(t, true /* expectZeroNewDetacherCallCount */, fakePlugin)
}

// Populates data struct with one volume/node entry.
// Calls SetVolumeMountedByNode twice, first setting mounted to true then false.
// Calls AddVolumeNode to readd the same volume/node.
// Verifies mountedByNode is false and detachRequestedTime is zero.
func Test_SetVolumeMountedByNode_Positive_UnsetWithInitialSetAddVolumeNodeNotReset(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	generatedVolumeName, addErr := asw.AddVolumeNode(volumeSpec, nodeName)
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	// Act
	setVolumeMountedErr1 := asw.SetVolumeMountedByNode(generatedVolumeName, nodeName, true /* mounted */)
	setVolumeMountedErr2 := asw.SetVolumeMountedByNode(generatedVolumeName, nodeName, false /* mounted */)
	generatedVolumeName, addErr = asw.AddVolumeNode(volumeSpec, nodeName)

	// Assert
	if setVolumeMountedErr1 != nil {
		t.Fatalf("SetVolumeMountedByNode1 failed. Expected <no error> Actual: <%v>", setVolumeMountedErr1)
	}
	if setVolumeMountedErr2 != nil {
		t.Fatalf("SetVolumeMountedByNode2 failed. Expected <no error> Actual: <%v>", setVolumeMountedErr2)
	}
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 1 {
		t.Fatalf("len(attachedVolumes) Expected: <1> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName, string(volumeName), nodeName, false /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Populates data struct with one volume/node entry.
// Calls MarkDesireToDetach() once on volume/node entry.
// Calls AddVolumeNode() to re-add the same volume/node entry.
// Verifies mountedByNode is true and detachRequestedTime is reset to zero.
func Test_MarkDesireToDetach_Positive_MarkedAddVolumeNodeReset(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	generatedVolumeName, addErr := asw.AddVolumeNode(volumeSpec, nodeName)
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	// Act
	_, markDesireToDetachErr := asw.MarkDesireToDetach(generatedVolumeName, nodeName)
	generatedVolumeName, addErr = asw.AddVolumeNode(volumeSpec, nodeName)

	// Assert
	if markDesireToDetachErr != nil {
		t.Fatalf("MarkDesireToDetach failed. Expected: <no error> Actual: <%v>", markDesireToDetachErr)
	}
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	// Assert
	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 1 {
		t.Fatalf("len(attachedVolumes) Expected: <1> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName, string(volumeName), nodeName, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Populates data struct with two volume/node entries (same volume different node).
// Calls GetAttachedVolumes() to get list of entries.
// Verifies both volume/node entries are returned.
func Test_GetAttachedVolumes_Positive_OneVolumeTwoNodes(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	node1Name := "node1-name"
	generatedVolumeName1, add1Err := asw.AddVolumeNode(volumeSpec, node1Name)
	if add1Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add1Err)
	}
	node2Name := "node2-name"
	generatedVolumeName2, add2Err := asw.AddVolumeNode(volumeSpec, node2Name)
	if add2Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add2Err)
	}

	if generatedVolumeName1 != generatedVolumeName2 {
		t.Fatalf(
			"Generated volume names for the same volume should be the same but they are not: %q and %q",
			generatedVolumeName1,
			generatedVolumeName2)
	}

	// Act
	attachedVolumes := asw.GetAttachedVolumes()

	// Assert
	if len(attachedVolumes) != 2 {
		t.Fatalf("len(attachedVolumes) Expected: <2> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName1, string(volumeName), node1Name, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName1, string(volumeName), node2Name, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Populates data struct with one volume1/node1 entry.
// Calls VolumeNodeExists() with volume1/node2.
// Verifies requested entry does not exist, but populated entry does.
func Test_VolumeNodeExists_Positive_VolumeExistsNodeDoesntExist(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	node1Name := "node1-name"
	node2Name := "node2-name"
	generatedVolumeName, addErr := asw.AddVolumeNode(volumeSpec, node1Name)
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	// Act
	volumeNodeComboExists := asw.VolumeNodeExists(generatedVolumeName, node2Name)

	// Assert
	if volumeNodeComboExists {
		t.Fatalf("%q/%q volume/node combo exists, it should not.", generatedVolumeName, node2Name)
	}

	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 1 {
		t.Fatalf("len(attachedVolumes) Expected: <1> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName, string(volumeName), node1Name, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Populates data struct with one volume/node entry.
// Calls DeleteVolumeNode() to delete volume/node.
// Verifies no volume/node entries exists.
func Test_DeleteVolumeNode_Positive_VolumeExistsNodeExists(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	generatedVolumeName, addErr := asw.AddVolumeNode(volumeSpec, nodeName)
	if addErr != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", addErr)
	}

	// Act
	asw.DeleteVolumeNode(generatedVolumeName, nodeName)

	// Assert
	volumeNodeComboExists := asw.VolumeNodeExists(generatedVolumeName, nodeName)
	if volumeNodeComboExists {
		t.Fatalf("%q/%q volume/node combo exists, it should not.", generatedVolumeName, nodeName)
	}

	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 0 {
		t.Fatalf("len(attachedVolumes) Expected: <0> Actual: <%v>", len(attachedVolumes))
	}
}

// Populates data struct with pod1/volume/node and pod2/volume/node.
// Calls DeleteNode() to delete the pod1/volume/node.
// Verifies volume still exists, and one volumes to attach.
func Test_DeletePod_Positive_2PodsExistNodeExistsVolumesExist(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	pod1Name := "pod1-name"
	pod2Name := "pod2-name"
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	dsw.AddNode(nodeName)
	generatedVolumeName1, pod1AddErr := dsw.AddPod(pod1Name, volumeSpec, nodeName)
	if pod1AddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod1Name,
			pod1AddErr)
	}
	generatedVolumeName2, pod2AddErr := dsw.AddPod(pod2Name, volumeSpec, nodeName)
	if pod2AddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod2Name,
			pod2AddErr)
	}
	if generatedVolumeName1 != generatedVolumeName2 {
		t.Fatalf(
			"Generated volume names for the same volume should be the same but they are not: %q and %q",
			generatedVolumeName1,
			generatedVolumeName2)
	}
	volumeExists := dsw.VolumeExists(generatedVolumeName1, nodeName)
	if !volumeExists {
		t.Fatalf(
			"Volume %q does not exist under node %q, it should.",
			generatedVolumeName1,
			nodeName)
	}

	// Act
	dsw.DeletePod(pod1Name, generatedVolumeName1, nodeName)

	// Assert
	volumeExists = dsw.VolumeExists(generatedVolumeName1, nodeName)
	if !volumeExists {
		t.Fatalf(
			"Volume %q under node %q should still exist, but it does not.",
			generatedVolumeName1,
			nodeName)
	}

	volumesToAttach := dsw.GetVolumesToAttach()
	if len(volumesToAttach) != 1 {
		t.Fatalf("len(volumesToAttach) Expected: <1> Actual: <%v>", len(volumesToAttach))
	}

	verifyVolumeToAttach(t, volumesToAttach, nodeName, generatedVolumeName1, string(volumeName))
}

// Populates data struct with pod1/volume/node.
// Calls DeleteNode() to delete the pod2/volume/node.
// Verifies volume still exists, and one volumes to attach.
func Test_DeletePod_Positive_PodDoesNotExist(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	pod1Name := "pod1-name"
	pod2Name := "pod2-name"
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	nodeName := "node-name"
	dsw.AddNode(nodeName)
	generatedVolumeName, pod1AddErr := dsw.AddPod(pod1Name, volumeSpec, nodeName)
	if pod1AddErr != nil {
		t.Fatalf(
			"AddPod failed for pod %q. Expected: <no error> Actual: <%v>",
			pod1Name,
			pod1AddErr)
	}
	volumeExists := dsw.VolumeExists(generatedVolumeName, nodeName)
	if !volumeExists {
		t.Fatalf(
			"Added pod %q to volume %q/node %q. Volume does not exist, it should.",
			pod1Name,
			generatedVolumeName,
			nodeName)
	}

	// Act
	dsw.DeletePod(pod2Name, generatedVolumeName, nodeName)

	// Assert
	volumeExists = dsw.VolumeExists(generatedVolumeName, nodeName)
	if !volumeExists {
		t.Fatalf(
			"Volume %q/node %q does not exist, it should.",
			generatedVolumeName,
			nodeName)
	}

	volumesToAttach := dsw.GetVolumesToAttach()
	if len(volumesToAttach) != 1 {
		t.Fatalf("len(volumesToAttach) Expected: <1> Actual: <%v>", len(volumesToAttach))
	}

	verifyVolumeToAttach(t, volumesToAttach, nodeName, generatedVolumeName, string(volumeName))
}

// Populates data struct with two volume/node entries the second one using a
// different node.
// Calls DeleteVolumeNode() to delete first volume/node.
// Verifies only second volume/node entry exists.
func Test_DeleteVolumeNode_Positive_TwoNodesOneDeleted(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	volumeSpec := controllervolumetesting.GetTestVolumeSpec(string(volumeName), volumeName)
	node1Name := "node1-name"
	node2Name := "node2-name"
	generatedVolumeName1, add1Err := asw.AddVolumeNode(volumeSpec, node1Name)
	if add1Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add1Err)
	}
	generatedVolumeName2, add2Err := asw.AddVolumeNode(volumeSpec, node2Name)
	if add2Err != nil {
		t.Fatalf("AddVolumeNode failed. Expected: <no error> Actual: <%v>", add2Err)
	}
	if generatedVolumeName1 != generatedVolumeName2 {
		t.Fatalf(
			"Generated volume names for the same volume should be the same but they are not: %q and %q",
			generatedVolumeName1,
			generatedVolumeName2)
	}

	// Act
	asw.DeleteVolumeNode(generatedVolumeName1, node1Name)

	// Assert
	volumeNodeComboExists := asw.VolumeNodeExists(generatedVolumeName1, node1Name)
	if volumeNodeComboExists {
		t.Fatalf("%q/%q volume/node combo exists, it should not.", generatedVolumeName1, node1Name)
	}

	volumeNodeComboExists = asw.VolumeNodeExists(generatedVolumeName1, node2Name)
	if !volumeNodeComboExists {
		t.Fatalf("%q/%q volume/node combo does not exist, it should.", generatedVolumeName1, node2Name)
	}

	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 1 {
		t.Fatalf("len(attachedVolumes) Expected: <1> Actual: <%v>", len(attachedVolumes))
	}

	verifyAttachedVolume(t, attachedVolumes, generatedVolumeName1, string(volumeName), node2Name, true /* expectedMountedByNode */, false /* expectNonZeroDetachRequestedTime */)
}

// Calls VolumeNodeExists() on empty data struct.
// Verifies requested entry does not exist.
func Test_VolumeNodeExists_Positive_VolumeAndNodeDontExist(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	asw := NewActualStateOfWorld(volumePluginMgr)
	volumeName := api.UniqueDeviceName("volume-name")
	nodeName := "node-name"

	// Act
	volumeNodeComboExists := asw.VolumeNodeExists(volumeName, nodeName)

	// Assert
	if volumeNodeComboExists {
		t.Fatalf("%q/%q volume/node combo exists, it should not.", volumeName, nodeName)
	}

	attachedVolumes := asw.GetAttachedVolumes()
	if len(attachedVolumes) != 0 {
		t.Fatalf("len(attachedVolumes) Expected: <0> Actual: <%v>", len(attachedVolumes))
	}
}

// Calls VolumeExists() on some volume/node.
// Verifies volume/node do not exist, and zero volumes to attach.
func Test_VolumeExists_Positive_VolumeDoesntExistNodeDoesntExists(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := controllervolumetesting.GetTestVolumePluginMgr((t))
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	nodeName := "node-name"
	volumeName := api.UniqueDeviceName("volume-name")

	// Act
	volumeExists := dsw.VolumeExists(volumeName, nodeName)

	// Assert
	if volumeExists {
		t.Fatalf("Volume %q exists, it should not.", volumeName)
	}

	volumesToAttach := dsw.GetVolumesToAttach()
	if len(volumesToAttach) != 0 {
		t.Fatalf("len(volumesToAttach) Expected: <0> Actual: <%v>", len(volumesToAttach))
	}
}